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There is now a strong demand in Sweden for construction of new low energy buildings (LEB) areas. Thereare essentially three options for heat supply to these LEB areas: “individual”, “on-site” and “large heatnetwork” supply. The chosen option is of strategic societal interest. Thus, this study aims at comparingthe long-term system cost of the three heat supply options. A dynamic modelling approach is applied in asystematic analysis designed to investigate the threshold for the various options' cost-efficiency. Thestudy addresses scale impacts of hypothetical LEB areas and district heating systems. The results showthat, generally, the large heat network option has the lowest system cost whereas in most cases theindividual option has the highest system cost.
Sandvall et al. (Mon,) studied this question.